Add reg_test_5306 to test groups, excluding digest-disabled configs

test/tap/groups/groups.json

@@ -185,6 +185,7 @@
   "reg_test_4935-caching_sha2-t" : [ "mysql84-g4","mysql-auto_increment_delay_multiplex=0-g4","mysql-multiplexing=false-g4","mysql-query_digests=0-g4","mysql-query_digests_keep_comment=1-g4" ],
   "reg_test_5212_tcp_keepalive_warnings-t" : [ "legacy-g1","mysql84-g1" ],
   "reg_test_5233_set_warning-t" : [ "legacy-g1","mysql84-g1","mysql-auto_increment_delay_multiplex=0-g1","mysql-multiplexing=false-g1","mysql-query_digests=0-g1","mysql-query_digests_keep_comment=1-g1" ],
+  "reg_test_5306-show_warnings_with_comment-t" : [ "legacy-g2","mysql84-g2","mysql-auto_increment_delay_multiplex=0-g2","mysql-multiplexing=false-g2" ],
   "reg_test_5389-flush_logs_no_drop-t" : [ "legacy-g4","mysql84-g4" ],
   "reg_test__ssl_client_busy_wait-t" : [ "legacy-g2","mysql84-g2","mysql-auto_increment_delay_multiplex=0-g2","mysql-multiplexing=false-g2","mysql-query_digests=0-g2","mysql-query_digests_keep_comment=1-g2" ],
   "reg_test_compression_split_packets-t" : [ "legacy-g2","mysql84-g2","mysql-auto_increment_delay_multiplex=0-g2","mysql-multiplexing=false-g2","mysql-query_digests=0-g2","mysql-query_digests_keep_comment=1-g2" ],